From db8a97a0e01fd87ab3f8e6893f8e0ccf98986e27 Mon Sep 17 00:00:00 2001 From: Sridhar Siricilla Date: Fri, 29 Apr 2022 15:13:38 +0530 Subject: soc/intel/common: Skip sending DISCONNECT IPC command The patch skips sending DISCONNECT IPC command to PMC if system resumes from S3. coreboot notice DISCONNECT IPC command getting timedout during S3 resume if system has AC connected behind Type-C hub. This impacts system resume time. Please refer TA# 730910 for more information. coreboot need not send the DISCONNECT IPC command when system resumes from S3 state. TEST=Verified system boots to OS and verfied below tests on Gimble 1. coreboot doesn't send the DISCONNECT during S3 resume 2. After S3 resume, system detects the pen drive with Superspeed 3. After system resumes from S3, hot-plug the pen drive, system detects the pen drive 3. System sends IPC commands when system boots from S0 or S5. Signed-off-by: Sridhar Siricilla Change-Id: I6ad006ae8677919c7dfeca8eec0af11454a2e89d Reviewed-on: https://review.coreboot.org/c/coreboot/+/63932 Tested-by: build bot (Jenkins) Reviewed-by: Subrata Banik --- src/soc/intel/common/block/tcss/tcss.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/src/soc/intel/common/block/tcss/tcss.c b/src/soc/intel/common/block/tcss/tcss.c index 18fff20fb2..a0cd733ad7 100644 --- a/src/soc/intel/common/block/tcss/tcss.c +++ b/src/soc/intel/common/block/tcss/tcss.c @@ -422,8 +422,10 @@ void tcss_configure(const struct typec_aux_bias_pads aux_bias_pads[MAX_TYPE_C_PO if (port_map == NULL) return; - for (i = 0; i < num_ports; i++) - tcss_init_mux(i, &port_map[i]); + if (!platform_is_resuming()) { + for (i = 0; i < num_ports; i++) + tcss_init_mux(i, &port_map[i]); + } /* This should be performed before alternate modes are entered */ if (tcss_ops.configure_aux_bias_pads) -- cgit v1.2.3